diff options
Diffstat (limited to 'sys/kern/sys_process.c')
| -rw-r--r-- | sys/kern/sys_process.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index 70f48adc2be8..c67996ad7df1 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -1324,8 +1324,15 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) p->p_flag2 &= ~P2_PTRACE_FSTP; } - /* should we send SIGCHLD? */ - /* childproc_continued(p); */ + /* + * Send SIGCHLD and wakeup the parent as needed. It + * may be the case that they had stopped the child + * before it got ptraced, and now they're in the middle + * of a wait(2) for it to continue. + */ + PROC_LOCK(p->p_pptr); + childproc_continued(p); + PROC_UNLOCK(p->p_pptr); break; } |